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水上无土种植水稻,是人多地少地区利用塘堰库水面增产粮食的新途径,也是水上种稻、水下养鱼的立体农业新路子。大足县龙水良种场1991年试验亩产537公斤的经验是: 一、浮体构建。用慈竹片编织2块箦子,长3米,宽1米,下箦为15厘米方孔,上箦行距10厘米、14厘米,株距10厘米、5厘米的孔重复:又用竹块把麦草或高粱秆捆夹成茅扇,厚10厘米,其中包入氮磷钾锌肥,四周用尼龙绳和比箦稍长的竹杆捆扎,底部及四周再用薄膜包好待用。二、水稻品种。最好选中、矮秆水稻品种(育秧与农田相同),在秧苗分蘖未期施“多效唑”,控制茎秆生长,以防倒伏。
Soilless cultivation of rice on water is a new way to increase the grain yield of ponds and ponds by using more water and less land. It is also a new way of three-dimensional agriculture for water-borne rice and underwater fish farming. Dazu County Longshui good field trial of 1991 acres of 537 kg experience is: First, the buoy structure. 2 pieces of prickly heat with knitting bamboo weaving, 3 meters long, 1 meter wide, 15 meters below the square hole, the line spacing of 10 cm, 14 cm, spacing 10 cm, 5 cm hole repeat: Also with bamboo Wheat straw or sorghum bundle bundles into a fan, 10 cm thick, which includes nitrogen, phosphorus, potassium and zinc fertilizer, surrounded by nylon rope and bamboo longer than the bamboo bundle, the bottom and around the film and then use a good package. Second, rice varieties. The best selection, dwarf rice varieties (nursery and farmland the same), in the seedling tiller application of “paclobutrazol” to control the growth of stems to prevent lodging.